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GB1160496A - A Photosensitively Triggered Sound Producing Apparatus. - Google Patents

A Photosensitively Triggered Sound Producing Apparatus.

Info

Publication number
GB1160496A
GB1160496A GB11165/68A GB1116568A GB1160496A GB 1160496 A GB1160496 A GB 1160496A GB 11165/68 A GB11165/68 A GB 11165/68A GB 1116568 A GB1116568 A GB 1116568A GB 1160496 A GB1160496 A GB 1160496A
Authority
GB
United Kingdom
Prior art keywords
triggered
photosensitively
energize
producing apparatus
photodiode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB11165/68A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRUCK AND CAR Co PROPRIET
Original Assignee
TRUCK AND CAR Co PROPRIET
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRUCK AND CAR Co PROPRIET filed Critical TRUCK AND CAR Co PROPRIET
Publication of GB1160496A publication Critical patent/GB1160496A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Abstract

1,160,496. Automatic alarm systems. TRUCK & CAR CO. (PTY.) Ltd. 7 March, 1968 [8 March, 1967], No. 11165/68. Heading G4N. [Also in Division H3] Two photodiodes 12, 13 are provided on a door jamb and illuminated by a common source (10), the arrangement being such that a person passing in one direction causes operation of a sound reproducing device, but a person passing in the opposite direction does not. Referring to Fig. 2, if the light falling on photodiode 13 is interrupted first, a monostable multivibrator 19 is triggered to energize a relay 20, closing contacts 21 to energize the device, which may be tape recorder for reproducing an advertising slogan. If the light falling on photodiode 12 is interrupted first, monostable multivibrator 24 is triggered and blocks diode 18 to prevent triggering of multivibrator 19.
GB11165/68A 1967-03-08 1968-03-07 A Photosensitively Triggered Sound Producing Apparatus. Expired GB1160496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA671329 1967-03-08

Publications (1)

Publication Number Publication Date
GB1160496A true GB1160496A (en) 1969-08-06

Family

ID=25561070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11165/68A Expired GB1160496A (en) 1967-03-08 1968-03-07 A Photosensitively Triggered Sound Producing Apparatus.

Country Status (3)

Country Link
CH (1) CH475613A (en)
FR (1) FR1556662A (en)
GB (1) GB1160496A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400739A1 (en) * 1977-08-18 1979-03-16 Winkhaus Fa August ALARM INSTALLATION
CN104766507A (en) * 2015-04-07 2015-07-08 张鹏 Automobile attack reminding device under simulation battlefield environment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053881A1 (en) 2008-10-30 2010-05-12 I.L.E.E. Ag Industrial Laser And Electronic Engineering Reflection barrier with surveying and / or localization function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2400739A1 (en) * 1977-08-18 1979-03-16 Winkhaus Fa August ALARM INSTALLATION
US4410884A (en) 1977-08-18 1983-10-18 Firma Aug. Winkhaus Alarm system
CN104766507A (en) * 2015-04-07 2015-07-08 张鹏 Automobile attack reminding device under simulation battlefield environment

Also Published As

Publication number Publication date
CH475613A (en) 1969-07-15
FR1556662A (en) 1969-02-07

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees